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Hybrid energy storage devices combining carbon-nanotube/polyaniline supercapacitor with lead-acid battery assembled through a “directly-inserted” method

Author:
Yin, Yanli, Liu, Changhong, Fan, Shoushan
Source:
RSC advances 2014 v.4 no.50 pp. 26378-26382
ISSN:
2046-2069
Subject:
batteries, carbon nanotubes, composite films, composite materials, electrochemistry, electrodes, energy, industrialization, polyaniline, specific energy, synergism
Abstract:
In this work, we used a new method to assemble hybrid energy storage devices, combining electrochemical capacitor with lead-acid battery. The ultrathin, flexible and low-weight carbon-nanotube/polyaniline (CNT/PANI) composite films used as supercapacitor electrodes were “directly-inserted” into a lead-acid battery in series or parallel. This quite simple and effective method is promising for large-scale industrialization as it reduces production and process complexity. The assembled hybrid devices showed notably improved properties, including a 19% increase in specific capacity, a 21% increase in specific energy or a 6% increase in specific power when compared to the conventional independent lead-acid batteries, which can be attributed to the synergic effect of batteries and supercapacitors.
Agid:
6649770